SNOWBOARDER Magazine’s unbiased blank snowboard test, The Blackboard Experiment. Ten snowboard brands provided us with a snowboard of their choice, but the one caveat was that it had to have a black topsheet and base graphic, so as to keep the anonymity of the brand only between them and us. Sage Kotsenburg, 2014 Sochi Winter Olympic gold medalist tested every deck, putting it through the paces in Mammoth Mountain’s hallowed Main Park.